Captain America's a bit of a mixed movie. Steve Rogers himself is great and Chris Evans plays him well. He does good shield throwing. Yarp.
Okay, so first of all, when I have an army of evil soldiers with future guns that vaporize everything, and the only threat to my plans is a super soldier with an invincible shield, my first order of business will be to tell those soldiers "SHOOT HIM IN THE SHIELD!" Because even though it doesn't work the first ten times, surely the eleventh it will.
Seriously, if you want to know how good the Hydra guys are at being evil and killing good guys, reread
this McSweeney's article about Cobra. Also, if vibranium was that valuable, to the extent that the world's supply of it was in a single room, why would Howard Stark produce a completely pointless prototype shield of it when it wasn't even intended to be used?
Speaking of Stark, why the Hell is he everywhere? Doesn't he have other crap to do? And he and Agent Carter were going to pick him up with some fifty POWs in a small plane? Behind enemy lines? And they would land.... where? This plan was not well thought through.
Also, worth noting is that the Allies were on the offense the entire film. Hydra takes out the Super Soldier program, and after that they're on defense the entire film with one last pathetic Hail Mary at the end of the movie. Hydra is a terrible threat. Super Nazis with future God Weapons getting their asses kicked, over and over and over, including by unarmed prisoners escaping - we're supposed to be scared of that? Think about it. What weapons finally outdid the Captain? Flame throwers. We have those even without the use of the Cosmic Cube.
Really, the heroes steal an enemy vehicle and the bad guys don't think "Hey, maybe we should stop them? We have the weapons and they're destroying everything." Jesus Christ.
And come on, Red Skull's plan? His master bloody plan? "We'll bomb their cities with a plane that's really fast!" That's it. That's IT. OOoooooOooOOOooOOoOOOOOoooh, scary. And didn't they say at the beginning of the film that the film was found in Russia? Because the radar was showing it was going Southwest following a coastline towards New York. Where was it? And where did it come from?
Oh, AND Captain said there was no time - he had to ground the plane! For some reason that wasn't clear! He didn't destroy it, he didn't tear it apart, he FLEW IT INTO THE GROUND. So what, the controls gave him pitch but neither roll nor yaw? Oh please. "No no no, we can't figure out how to land this thing and maybe get its wonderful technology for America! I must be tragic so that this plotline works with the Avengers timeline."
"No, seriously! Shoot him in his magic Invincoshield!"